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2. Impacts on approved pit backfill: The narrative indicates as much as one hundred million <br /> tons of overburden might now be reclassified as ore. Some of the identified sources <br /> appear to be existing backfill (e.g., east cresson waste and Altman dump). Please provide <br /> some narrative as to whether: <br /> a. CC&Vis requesting any reductions in the volume of approved pit backfill, <br /> b. CC&V intends significant changes in overburden storage area topography. <br /> As DRMS understands, these facilities are dynamic in nature; as portrayed in <br /> the during-mining proposals approved in Amendments 9, 10 and 11. CC&V is <br /> not requesting any reductions to the approved pit backfill volumes. Pending <br /> approval, the areas included in Figure 1 will continue to be utilized as <br /> overburden storage areas (OSAs). CC&V remains committed to maintaining <br /> previously permitted capacities of valley leach facilities (VLFs) and OSAs. <br /> CC&V also remains committed to the final closure topography, as approved in <br /> Amendment 12. <br /> 3. Placement of"re-mined" mineralized waste: The narrative indicates the material will be <br /> placed (crushed or as (run of) mine) on one of the Valley Leach Facilities (VLFs). The <br /> Division in under the impression that the Arequa Gulch VLF(a.k.a. VLF 1) is completely <br /> built out to the maximum approve capacity. If this is the case, there appers to be only one <br /> option for material placement; that being the Squaw Gulch VLF (a.k.a. VLF 2). Please <br /> clarify where the material is to be placed, and if VLF 1 is an option, how that <br /> corresponds with the approved VLF 1 build out. <br /> The Arequa Gulch VLF has several locations that are below the 10,400 foot stacking <br /> height, as approved in Amendment 11. Additionally, as of December 2018, <br /> approximately 45 million tons of the total permitted capacity remains available at <br /> the Arequa Gulch VLF. Pending DRMS approval, this material will be placed in all <br /> available areas of the VLFs,while adhering to all approved stacking plans. <br /> 4. Mine process: Please provide additional narrative regarding: <br /> a. What equipment will be used and how the mineralized waste will be removed, <br /> crushed and transported to its new destination? <br /> b. How will the removal affect existing overburden storage area lifts and overall <br /> geotechnical stability? <br /> The material located in the proposed facilities was previously blasted and <br /> therefore, will not be necessary to blast in order to transport. Pending DRMS <br /> approval, CC&V will utilize CAT 793 haul trucks and 550 Class Kamatsu <br /> Shovels or 994 CAT Loaders to remove the mineralized waste. Material that is <br /> classified as ore will be mined and either; 1) be hauled and placed directly on a <br /> VLF, 2) hauled to the crusher then placed on a VLF, or 3) hauled to the crusher <br /> then taken to the high grade mill. <br />